The Aijiren Scientific 2ml chromatography vial Certified Vial Convenience Kit (Opening 9mm) is fully lot tested in multiple ways for 15 critical parameters. 2ml autosampler vials with caps China 0.3ml PP Short Screw-Thread Micro-Vial, Clear 11.6*32mm.Aijiren 9mm screw thread vials have a volume of 0.3mL micro vials and make it easier to attach or remove the closure making sample prep more